FORAMINIFERA OF THE ATLANTIC OCEAN. 



33 



smooth; aperture small, circular, oft(m with a short, cylindrical 

 neck at the end or more often at the side or even near the base of 

 the chamber; color yellowish brown. 



Lent:;th up to 8 mm. 



Distribution. — Brady gives this species as very rare. He had 

 it from a Valorous station about latitude 59° N. in 1,750 fathoms 

 (3,200 meters) and Porcupine station northwest of Ireland in 1,380 

 fathoms (2,524 meters). Pearcey records it from the Antarctic. 



In the Albatross material it has occurred at six stations, three of 

 them off our northeastern coast, one off the Leeward Islands, the 

 others off South America, off Bahia. and Buenos Aires. Those from 

 the northern stations are from tk^ep water, the others much more 

 shallow. 



It is also known from the North Pacific east of Japan and from 

 the South Pacific west of Chile and from off New Zealand. 



The irregular form seems to be largely due to the peculiar charac- 

 ter of lack of definit(>ness in the position of the aperture. When this 

 occurs at the side the next chamber is added there and a veiy irregular 

 form thus results. 



IfonvosiiKi imrniani — malcriol examined. 



Genus HAPLOSTICHE Reuss, 1861. 



Xodomria (puit) u'Okbiuny, Ann. Sci. Nat., vol. 7, 1826, p. 252. — Reu.ss, Vers. 



Bohm, Kroide, vol. 1, 1845-1846, p. 26, pi. 13, figs. 12-13. 

 Lituoht (part) Jone.s and P.\rker, Quart. .Tourn. Geol. Soc, vol. 16, 1860, p. 307. 

 Uriphntiche Ret.s.s, ,Sitz. Bohm. (Jes. Wiss., Jahra;. 1861, p. 16 (Type, H./oedLs- 



sima Reuss, 1865). — H. B. Bk.\dy, Rep. Yoy. Challenger, Zoology, vol. 9, 



1884, p. 317. — Ch.\pm.\n, The Foraminifera, 1902, p. 141. — Cusiim.\n, Bull. 



71, U. S. Nat. Mus., pt. 1, 1910, p. 96. 



Description. —Tost free, cylindrical or tapering, composed of a 

 linear series of chambers, interior labyrinthic; walls thick, coarsely 

 arenaceous, but usually fairly smooth on the exterior; aperture 

 terminal in the middle of the distal portion of the last-formed cham- 

 ber, in the earlier cliambers usually simple, in the adult made up of 

 several pores or in large specimens often dendritic, occasionally 

 with a short neck. 

 121802—20 3 



